Drainage-gate.



M JJ MSWM W. GOTTSCHALK.

DRAINAGE GATE.

APPLICATION FILED JULY 23. 19:7.

1,%76,053 Patented Aug. 20, 1918.

UNITED STATES PATENT OFFICE.

WILLIAM eo'r'rsoHAL'K', 01 SAN, rnANcIsco, CALIFORNIA, Assrenon To nu'rroiv DREZDGE 00., or SAN rnancrsco, CALIFORNIA, A conronA'rroN or CALIFORNIA.

DRAINAGE-GATE.

Specification of Letters Patent.

Patented Aug. 20, 1918.

Application filed July 23, 1917. Serial No. 182,210.

To all whom it may concern:

Be it known that I, WILLIAM Go'rr- SGI-IALK, a citizen of the United States, residing at the city and county of San Francisco and State of California, have invented new and useful Improvements in Drainage- Gates, of which the following is a specification. l

This invention relates to a drainage gate.

One of the objects of the present invention isto provide a gate which is particularly adapted for use in connection with drainage ditches on reclaimed land and the like, which will automatically open to permit the water in the ditches to escape at low water and automatically close to prevent back water caused by rising tides or floods to return to the ditches. Another object of the invention is to provide a simple, substantial gate structure, and in conjunction therewith a link supported hinged mounting which will permit a pivotal, longitudinal, angular and lateral movement ofthe gate with relation to-its seat, thereby preventing breakage or straining of the gate supporting mechanism if flotsam or any other obstruction should become. lodged between the gate and its seat. Further objects will hereinafter appear.

1 The invention consists of the parts and the constructionand combination of parts as hereinafter more fully described and claimed, having reference to the accompanying drawings, in which Figure 1 is a side elevation of the gate.

Fig. 2 is a front view of same.

Referring to the drawings indetail, A indicates a frame or casing which is adapted tobe secured on the outer .end of a discharging culvert communicating with a drainage ditch or the like. Formed centrally of the casing is a discharge opening 2, and formed on the forward face of the casing is a seat 3 which is adapted to receive a gate or valve 4 forming a closure for the opening 2.

Pivotally connected to each side of the gate, as at 5, is a pair of links 6, and journaled in the upper end of each link is a roller or sheave 7 which is adapted to travel longitudinally upon the supporting bar 8 which is secured to the casing A and provided with an outer hooked end, as shown at 9. Also secured to the casing is an intermediate bar 9, and adapted to travel longitudinally on said bar is a sheave 10 which is journaled in a link 11 pivotally secured to the upper end'of the gate, as at 12. This link is provided for the nurpose of limiting the pivotal movement of the gate in the lower end of the links 6, as will hereinafter be described.

The gate is particularly adapted for use in connection with drainage ditches on reclaimed land and the like, and the mounting or hanging of the gate is such that it will automatically open and move away from the seat 3 to permit the water inthe ditches to escape at low water and automatically close to prevent back water caused by rising tides or floods to return to the ditches.

The closed position of the gate shown in Fig. 1 is assumed when the water outside of the gate assumes'a higher level, as shown at 14, than the water level in the ditch indicated at 15, while opening of the gate is permitted when the outside level drops below the ditch level. The water when discharging through the gate not only causes the gate to move longitudinally away from the seat but also causes it to assume a tilted position, as shown by the dotted lines at 16, in this manner permitting a free discharge of the escaping water.

The particular link structure here shown from which the gate is hung and in which it is pivotally mounted is of great importance as it first of. all permits the gate to move longitudinally away from its seat; second, it permits the gate to pivot in the lower ends of the links; third, an angular movement of the gate with relation to its seat is permitted; and, fourth, a lateral movement is permitted. The importance of this can readily be seen when it is considered that flotsam and other discharging material often becomes lodged between the gate and its seat. Such obstructions can cause no damage in the present instance as the free movement and hanging of the gate with relation to its seat permits it to assume practically any position without straining the structure by which it is supported.

Heretofore it has been common to merely hinge a gate of this nature at its upper edge. Such a mounting of the gate causes an enormous strain to be exerted upon the hinges if any flotsam becomes lodged between the gate and its seat, particularly if the back water rises to a considerable height.

been entirely overcome in the present in:

stance, as it makes no difference whether an obstruct on becomes lodged in the side-Or n either end of the gate as perfect freedom of movement is permitted in all. directions,-

thus preventing the gatefrom straining or breaking any of the connected parts.

The link 11 while particularly employed for the purpose of limiting the pivotalmovement of the gate in the lower ends of the links 6; that is, preventing the gate from turning entirely around in the links, may also serve the purpose of an auxiliary or supplemental hanger, thereby partly relieving the links 6 of the weight of the gate.

The materials and finish of the several parts of the device here shown may be such as the experience and judgment of the manufacturer may dictate.

I wish it understood that various changes in form, proportions and minor details of construction may be resorted to within the scope of the appended claims and that I do no wish to limit myself to the specific, design and construction here shown.

Havingthus described my invention, what I claim and desire to secure by Letters Patent is- 1. In combination with a conduit and gatetherefor, a pair of spaced outer horizontal 'bars extending outwardly from the conduit mouth, an intermediate horizontal bar betweenthe outer bars and also extending outwardly from the conduit mouth, a pair of links having their upper ends formed withsupports engaging over said outer bars so as to be supported by the'latter, said linksbeingpivoted at their lower ends to the gate, a link pivoted at its lower end to the top of the gate and having its upper end formed with a support engaging over the intermediate bar, all of the links beingslidable alongthe lengths of said bars.

2. A drainage gate comprising a casing having a discharge opening formedtherein and a seat, a pair of'supporting-bars extendingoutwardly from the casing, a sheave adapted to travel on each bar, a link hung from each sheave, a gate adapted to engage the seat and form a closure for theopening in the casing pivotally mounted in the lower ends of said links, a stop on the outer end of each bar, a link=pivoted tocthenpper edge of the gate, anintermediate supporting-bar on the-casing, and a traveler -on saidbarto which thelastmamedalink is. pivotally secured.

3. In combination with a .conduitand a gate therefor, a pair. of outer ispaced. horizontal tracks extending outwardly fromthe conduit mouth, an intermediate horizontal track also extending outwardly from the conduit mouth, a pair ofsupports pivoted to the gate and engaged with the outer tracks so as to be'suspended therefrom and to slide therealong, and means pivoted to the gate and slidably connected: to the intermediatetrack to. restrict swinging ,movement of the gate withrespect to thesupports.

- 4. In combinationnwithi asconduit and a gate therefor, a pair of tracks carried by the conduit and extending outwardly; therefrom in a substantially horizontal plane, supporting means engaged with said tracks so as to swing transversely thereof andpivoted tothe gate so-as to allow-thelatter to 'swingvertically with respect to the plane of the conduit mouth, andv means. connected to the gate to restrict: swinging movement thereof in both directions toward and: away from the plane oftheiconduit mouth.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

WILLIAM tGoTTsoHALK;

Witnesses: Y

Aenns- O'ITEN, E. J LYNELS.-'

Copies of thispetent may be obtained for fivecents each,:.by addressing the ,cemniulmr-of; Patent, Waah lngton, D. 0. 

